Page 19 - ITU Journal, Future and evolving technologies - Volume 1 (2020), Issue 1, Inaugural issue

ITU Journal on Future and Evolving Technologies, Volume 1 (2020), Issue 1

6G vision: An ultra-flexible perspective

Pages 121-140
Ahmet Yazar, Seda Doğan Tusha, Huseyin Arslan

The upcoming sixth generation (6G) communications systems are expected to support an unprecedented
variety of applications, pervading every aspect of human life. It is clearly not possible to fulfill the
service requirements without actualizing a plethora of flexible options pertaining to the key enabler
technologies themselves. At that point, this work presents an overview of the potential 6G key enablers
from the flexibility perspective, categorizes them, and provides a general framework to incorporate
them in the future networks. Furthermore, the role of artificial intelligence and integrated sensing and
communications as key enablers of the presented framework is also discussed.

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On the evolution of infrastructure sharing in mobile networks: A survey

Pages 141-157
Lorela Cano, Antonio Capone, Brunilde Sansò

Infrastructure sharing for mobile networks has been a prolific research topic for more than three decades
now. The key driver for Mobile Network Operators to share their network infrastructure is cost
reduction. Spectrum sharing is often studied alongside infrastructure sharing although on its own it is a
vast research topic outside the scope of this survey. Instead, in this survey we aim to provide a complete
picture of infrastructure sharing both over time and in terms of research branches that have stemmed
from it such as performance evaluation, resource management etc. We also put an emphasis on the
relation between infrastructure sharing and the decoupling of infrastructure from services, wireless
network virtualization and multi-tenancy in 5G networks. Such a relation reflects the evolution of
infrastructure sharing over time and how it has become a commercial reality in the context of 5G.

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